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Air transportation safety investigation A21Q0087

The TSB has completed this investigation. The report was published on 6 June 2023.

Table of contents

Runway overrun

Airmédic Inc.
Pilatus PC-12/47E, C-GIOX
Sept-Îles Airport, Quebec

View final report

The occurrence

On 12 September 2021, the Airmédic Inc. Pilatus PC-12/47E aircraft (registration C-GIOX, serial number 1237) was conducting flight AM237 under instrument flight rules from Québec/Jean Lesage International Airport, Quebec, to Sept-Îles Airport, Quebec, with only 2 crew members on board. During final approach for Runway 09 at Sept-Îles Airport, when the aircraft was 1.6 nautical miles from the runway threshold, it was flying at 242 knots indicated airspeed. The aircraft crossed the runway threshold at 200 feet above ground level, at 180 knots indicated airspeed (ground speed of 191 knots); its rate of descent was 2000 fpm, the landing gear was in transit and the flaps were in the fully retracted position.

At 1709 Eastern Daylight Time, the aircraft landed approximately 2525 feet beyond the threshold of Runway 09, which was wet, at 159 knots indicated airspeed. Approximately 20 seconds later, the aircraft overran the runway at a ground speed of 57 knots and travelled approximately 590 feet in the grass before making a right turn around an approach light and returning to the runway. No one was injured. There was no damage to the aircraft.

Media materials

News release


TSB releases investigation report into 2021 runway overrun at Sept- Îles Airport, Quebec
Read the news release

Investigation information

Map showing the location of the occurrence


Photo of Pierre Gavillet

Pierre Gavillet joined the Air Investigations Directorate at the TSB regional office in Dorval, Quebec, as an investigator/operations specialist in October 2007. He has more than 30 years' experience in aerial operations as well as air taxi and commuter operations, and as a pilot with Canadian and foreign airlines. He has flown more than 50 models of aircraft, ranging from small training planes to large jet transport aircraft such as DC8s, B757s, A300s, A310s and A330s, in most regions of the world.

Since joining the TSB, Mr. Gavillet has been involved in many investigations in Quebec and Ontario.

Class of investigation

This is a class 3 investigation. These investigations analyze a small number of safety issues, and may result in recommendations. Class 3 investigations are generally completed within 450 days. For more information, see the Policy on Occurrence Classification.

TSB investigation process

There are 3 phases to a TSB investigation

  1. Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
  2. Examination and analysis phase: the TSB reviews pertinent records, tests components of the wreckage in the lab, determines the sequence of events and identifies safety deficiencies. When safety deficiencies are suspected or confirmed, the TSB advises the appropriate authority without waiting until publication of the final report.
  3. Report phase: a confidential draft report is approved by the Board and sent to persons and corporations who are directly concerned by the report. They then have the opportunity to dispute or correct information they believe to be incorrect. The Board considers all representations before approving the final report, which is subsequently released to the public.

For more information, see our Investigation process page.

The TSB is an independent agency that investigates air, marine, pipeline, and rail transportation occurrences. Its sole aim is the advancement of transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability.